linux-kernel - Re: [PATCH v2 00/28] Eliminate Dying Memory Cgroup

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Message-ID: <1264fd2b-e9bd-4a3b-86ad-eb919941f0a4@linux.dev>
Date: Mon, 29 Dec 2025 15:48:26 +0800
From: Qi Zheng <qi.zheng@...ux.dev>
To: Shakeel Butt <shakeel.butt@...ux.dev>, Yosry Ahmed <yosry.ahmed@...ux.dev>
Cc: hannes@...xchg.org, hughd@...gle.com, mhocko@...e.com,
 roman.gushchin@...ux.dev, muchun.song@...ux.dev, david@...nel.org,
 lorenzo.stoakes@...cle.com, ziy@...dia.com, harry.yoo@...cle.com,
 imran.f.khan@...cle.com, kamalesh.babulal@...cle.com,
 axelrasmussen@...gle.com, yuanchu@...gle.com, weixugc@...gle.com,
 chenridong@...weicloud.com, mkoutny@...e.com, akpm@...ux-foundation.org,
 hamzamahfooz@...ux.microsoft.com, apais@...ux.microsoft.com,
 lance.yang@...ux.dev, linux-mm@...ck.org, linux-kernel@...r.kernel.org,
 cgroups@...r.kernel.org, Qi Zheng <zhengqi.arch@...edance.com>
Subject: Re: [PATCH v2 00/28] Eliminate Dying Memory Cgroup



On 12/24/25 7:20 AM, Shakeel Butt wrote:
> On Tue, Dec 23, 2025 at 08:04:50PM +0000, Yosry Ahmed wrote:
> [...]
>>
>> I think there might be a problem with non-hierarchical stats on cgroup
>> v1, I brought it up previously [*]. I am not sure if this was addressed
>> but I couldn't immediately find anything.
> 
> Sigh, the curse of memcg-v1. Let's see what we can do to not break v1.

The memcg-v1 was originally planned to be removed, could we skip
supporting v1?

>